Hydraulics are very common in industry today and there are several excellent hydraulic cylinder manufacturers to choose from. However, it is important to select the right cylinder for your applications if you want to experience fewer problems with your business. Here are some common factors which come into play, for finding the right cylinder and manufacturer.
Mass and Force
What kind of mass do you need to move? This is the biggest consideration when choosing cylinders. If you know the maximum mass, you can then determine the force required to move it. For instance, a one thousand pound load will need a little more than one thousand pounds of force to move it. In order to push this same mass (one thousand pounds) you only need force enough for overcoming acceleration and the effects of friction. When figuring mass, consider erring on the side of caution and oversize if needed. This ensures your cylinders will not be worked beyond their designed capacities.
The Effect of Uneven Forces
If your loads are even and lifted up and down, there is not much else to consider (when it comes to the physics of lifting). However, hydraulic cylinder manufacturers take uneven forces into consideration when they design their products and for good reason. Let’s look at the example of crane cylinders. Many times, lifting distance can be far greater than lifting force, so it takes a great deal more force and power to lift this kind of load. These calculations can sometimes be complicated and you may need to consult a hydraulics engineer for assistance.
Cylinder Bore
After you are certain of your force requirements, the size of the cylinder bore is essential. There is a simple formula you can use. Force = hydraulic system pressure X piston surface exerting pressure. This should give you the right bore size for your cylinder.
Piston Rod Sizing
Piston rod sizes are determined by stroke. Factors like buckling and bearing load are just as important as stroke. Remember the longer the piston stroke the greater the load placed on the bearing. This helps to determine the types of stop tubes.
Cushioning
Some hydraulic cylinders may need cushioning depending on the application. This is important for high speed or heavy load applications. The best way to determine cylinder requirements is to go to the right source. Reputable hydraulic cylinder manufacturers have experienced engineers and understand your needs. They can help you choose the best cylinders for all your applications.
